Coherent light generators – Particular beam control device – Mode discrimination
Patent
1986-07-17
1989-01-31
Sikes, William L.
Coherent light generators
Particular beam control device
Mode discrimination
372 20, 372102, H01S 3098
Patent
active
048021768
ABSTRACT:
This invention relates to a laser apparatus having a gain medium disposed along an optical path between a first and second reflector, with the first one being a phase conjugate reflector. The second reflector comprises an SBS medium for generating a moving grating, but without forming an SBS mirror. An output coupling means is positioned between the gain medium and the second, non-phase conjugate, reflector for providing a beam of output radiation. A third reflection means is positioned in the optical path of the laser output beam for intercepting and reflecting a predetermined percentage of the output radiation. This reflected radiation is directed to the back or non-medium side of the second reflector by a fourth reflection means. The fourth reflection means receives radiation from the third reflection means and directs it into the second (SBS) reflector along an optical path toward the laser medium that is substantially parallel to the first optical path of the laser. A moving acoustical grating is thereby generated in the second reflector for reflecting laser radiation incident on the grating from the laser medium side, after upshifting the frequency thereof, but without creating the phase conjugate thereof.
REFERENCES:
patent: 3731103 (1973-05-01), O'Meara
patent: 3967899 (1976-06-01), O'Meara
patent: 4005935 (1977-02-01), Wang
patent: 4129775 (1978-12-01), O'Meara
patent: 4573157 (1986-02-01), O'Meara
N. G. Basov et al., "Control of the Characteristics of Reversing Mirrors in the Amplification Regime,"; Sov. J. Quantum Electronics; 11(10), Oct. 1981; pp. 1335-1337.
V. Wange et al.; "Correction of Phase Aberrations Via Stimulated Brillouin Scattering, " Optical Soc. of America, 1978, pp. 61-63.
C. R. Giuliano, "Applications of Optical Phase Conjugation," American Institute of Physics, 1981, pp. 1-8.
T. R. O'Meara, "Wavefront Compensation with Pseudoconjugation," Optical Engr., vol. 21, No. 2, Mar./Apr. 1982, pp. 271-280.
E. P. Ippen, "Stimulated Brillouin Scattering in Optical Fibers" Bell Telephone Laboratories; Holmdel, N.J.; Aug. 1971.
T. R. O'Meara, "Compensation of Laser Amplifier Trains With Nonlinear Conjugation Techniques;" Optical Engr., Mar./Apr. 1982, vol. 21, No. 2, pp. 243-251.
Denson-Low Wanda K.
Hughes Aircraft Company
Karambelas A. W.
Randolph B.
Sikes William L.
LandOfFree
Double moving grating laser does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Double moving grating laser, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double moving grating laser will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-183048